[rules-users] How to use KnowledgeAgent in the "old manner" (just like RuleAgent)

[Mark Proctor]

Mark Proctor wrote:
> Paul Sentosa wrote:
>> Hi,
>>
>> Mark, thanks for the links and explanation.
>> So if I use Guvnor for administrating my rules,
>> - should I use the URL pointing to LATEST.DRL in change-set instead 
>> of the one in package snapshot to get the latest version of rules?
>>
>> - I assume the communication between my application and the Guvnor 
>> will happen by the time applyChangeSet-method (which defines a 
>> resource by pointing to the URL of DRL) is called and internally 
>> create package out of it (compared to the method 
>> newRuleAgent("properties"). Is this correct? Is there any significat 
>> difference in required time/performance?
> I added file scanning, I haven't yet added http scanning, I'll do that 
> this week. the file and http scanning, work in the same manner as they 
> do for the original rule agent. If you look at the file scanner now, 
> you can see how to implement your own if you really need to. The 
> framework is now designed that people can built their own resource 
> monitors, so they can implement their own push based implementations.
Sorry I had a mind blank, and I'm talking complete bollocks. http does 
work. The ResourceChangeScannerImpl is independant of the resource type, 
as long as the resource type implements getLastModified() and 
getLastRead() it will work, which the http one does. So in theory 
whether file or http resources, it should work the same way as the old 
rule agent. The only difference is the configuration is now in a 
different location, if you need to change the interval. You now no 
longer change the interval on the individual rule agent, but on the service.
        Properties props = new Properties();
        props.setProperty("drools.resource.scanner.interval", "30");
        ResourceChangeScanner service = 
ResourceFactory.getResourceChangeScannerService();
        ResourceChangeScannerConfiguration rconf = 
service.newResourceChangeScannerConfiguration(props);
        service.configure( rconf );

Mark
>
> Mark
>>
>> Again, thanks and appreciate your answer
>>
>> Regards
>> Paul
>>
>>
>> ------------------------------------------------------------------------
>> *From:* Mark Proctor <mproctor at codehaus.org>
>> *To:* Rules Users List <rules-users at lists.jboss.org>
>> *Sent:* Tuesday, December 16, 2008 9:22:22 AM
>> *Subject:* Re: [rules-users] How to use KnowledgeAgent in the "old 
>> manner" (just like RuleAgent)
>>
>> psentosa wrote:
>> > Hi all,
>> >
>> > Can anyone give some explanation / examples on this? The docu is 
>> still using
>> > ruleagent.
>> > I found some piece of codes within the KnowledgeAgentFactory, but I 
>> saw that
>> > it uses the configuration object.
>> The javadocs:
>> https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/agent/KnowledgeAgent.html
>> https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/ChangeSet.html
>>
>> There are a number of unit tests you can follow:
>> http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/agent/KnowledgeAgentTest.java
>>
>> http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-compiler/src/test/java/org/drools/xml/changeset/ChangeSetTest.java
>>
>> http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-decisiontables/src/test/java/org/drools/decisiontable/ChangeSetTest.java
>> http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-decisiontables/src/test/resources/org/drools/decisiontable/
>> > I personally prefer the old style by using
>> > a property file in which the configuration is defined.
>> > 
>> The properties file does not offer enough flexibilility to support 
>> all resource types - the xml really is quite simple - how do you 
>> specify the worksheet name for a decision tree? In some ways it's 
>> actually simpler and more powerful, as there is no separate line for 
>> directories, it's just another resource and it detects that it's a 
>> directory. ChangeSets will eventually support remove and modify, for 
>> incremental knowledgebase changes, so the properties file just 
>> doesn't cut it.
>>
>> <change-set>
>>   <add>
>>     <resource source='http://www.domain.com/test.drl' 
>> <http://www.domain.com/test.drl%27> type='DRL' />
>>     <resource source='file://data/somedir' type='DRL' />
>>     <resource source='http://www.domain.com/test.xls' 
>> <http://www.domain.com/test.xls%27> type='DTABLE' >
>>         <decisiontable-conf worksheet-name='sheet10' input-type='XLS' />
>>     </resource>
>> </add>        </change-set>
>>
>>
>> Mark
>>
>>
>> > Thanks in advance for any help
>> >
>> > Regards
>> > Paul
>> > 
>>
>>
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>>
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